package day19.homework;

public class test6 {
    public static void main(String[] args) {
        String s1 = "helloworld"; 
        String s2 = "hello"; 
        String s3 = "world"; 
        String s4 = "hello" + "world"; 
        String s5 = s2 + s3; 
        String s6 = new String("helloword"); 
        String s7 = "hello" + new String("world"); 
        System.out.println(s1 == s4); 
        System.out.println(s1 == s5); 
        System.out.println(s1 == s6); 
        System.out.println(s1 == s7);
    }
}
